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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 214 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.162.3 × 100 =
  2. 2.41.24 × 100 =
  3. 3.29.77 × 10 =
  4. 4.13.18 ÷ 1000 =
  5. 5.35.6 ÷ 100 =
  6. 6.263.1 × 1000 =
  7. 7.49.74 × 10 =
  8. 8.24.89 ÷ 10 =
  9. 9.17.25 ÷ 10 =
  10. 10.38.99 ÷ 10 =
  11. 11.370.1 × 100 =
  12. 12.39.25 × 10 =
  13. 13.214.1 ÷ 10 =
  14. 14.177.3 × 10 =
  15. 15.13.49 ÷ 1000 =
  16. 16.39.34 ÷ 1000 =
  17. 17.300.9 ÷ 10 =
  18. 18.40.83 ÷ 1000 =
  19. 19.16.1 × 10 =
  20. 20.292.6 ÷ 10 =
  21. 21.198.8 ÷ 1000 =
  22. 22.38.16 × 10 =
  23. 23.39.36 × 1000 =
  24. 24.356.7 × 100 =
  25. 25.12.93 × 100 =
  26. 26.333.9 × 10 =
  27. 27.5.71 × 100 =
  28. 28.427.6 × 10 =
  29. 29.200.3 ÷ 1000 =
  30. 30.243.4 ÷ 100 =
  31. 31.72.9 × 1000 =
  32. 32.76.8 ÷ 100 =
  33. 33.86.2 × 10 =
  34. 34.210.4 × 10 =
  35. 35.362.1 × 100 =
  36. 36.173.7 ÷ 1000 =
  37. 37.90.9 ÷ 10 =
  38. 38.442.9 ÷ 1000 =
  39. 39.382.9 × 100 =
  40. 40.90.1 × 10 =

Answer key

  1. 16230
  2. 4124
  3. 297.7
  4. 0.01318
  5. 0.356
  6. 263100
  7. 497.4
  8. 2.489
  9. 1.725
  10. 3.899
  11. 37010
  12. 392.5
  13. 21.41
  14. 1773
  15. 0.01349
  16. 0.03934
  17. 30.09
  18. 0.04083
  19. 161
  20. 29.26
  21. 0.1988
  22. 381.6
  23. 39360
  24. 35670
  25. 1293
  26. 3339
  27. 571
  28. 4276
  29. 0.2003
  30. 2.434
  31. 72900
  32. 0.768
  33. 862
  34. 2104
  35. 36210
  36. 0.1737
  37. 9.09
  38. 0.4429
  39. 38290
  40. 901

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